Radio link monitoring in control channel repetition

Abstract

A wireless device may receive one or more configuration parameters indicating a single frequency network (SFN) scheme. The wireless device may further receive a command activating at least two transmission configuration indicator (TCI) states for a control resource set (coreset). The wireless device may monitor, via the coreset, downlink control channels based on the at least two active TCI states and determine a radio link quality based on the at least two active TCI states of the coreset, when the one or more configuration parameters indicate the SFN scheme. The wireless device may further transmit an uplink signal indicating the radio failure, when the radio link quality indicates a radio failure.

What is claimed is: 
     
       1. A wireless device comprising:
 one or more processors; and 
 a memory storing instructions that, when executed by the one or more processors, cause the wireless device to:
 receive, from a base station, one or more configuration parameters indicating a single frequency network (SFN) scheme; 
 receive, from the base station, a command activating at least two transmission configuration indicator (TCI) states for a control resource set (coreset); 
 monitor, via the coreset, downlink control channels based on the at least two active TCI states; 
 determine, when the one or more configuration parameters indicate the SFN scheme, a radio link quality based on the at least two active TCI states of the coreset; and 
 based on the radio link quality indicating a radio failure, transmit, to the base station, an uplink signal indicating the radio failure. 
 
 
     
     
       2. The wireless device of  claim 1 , wherein the radio failure is a radio link failure of a cell. 
     
     
       3. The wireless device of  claim 1 , wherein the radio failure is a beam failure. 
     
     
       4. The wireless device of  claim 1 , wherein the radio link quality is a signal noise rate (SNR). 
     
     
       5. The wireless device of  claim 1 , wherein the radio link quality is based on:
 a first reference signal indicated by a first TCI state of the at least two TCI states; and 
 a second reference signal indicated by a second TCI state of the at least two TCI states. 
 
     
     
       6. The wireless device of  claim 5 , wherein the monitoring the downlink control channel transmissions based on the at least two TCI states comprises at least one demodulation reference signal (DMRS) antenna port of the downlink control channel transmissions being quasi co-located with:
 the first reference signal with respect to a first quasi co-location type; and 
 the second reference signal with respect to a second quasi co-location type. 
 
     
     
       7. The wireless device of  claim 6 , wherein:
 the first quasi co-location type is a quasi co-location type D (QCL TypeD); and 
 the second quasi co-location type is a QCL TypeD. 
 
     
     
       8. The wireless device of  claim 1 , wherein the memory storing instructions further cause the wireless device to determine the radio failure based on the radio link quality being lower than a threshold. 
     
     
       9. The wireless device of  claim 1 , wherein the one or more configuration parameters the SFN scheme for physical downlink control channel (PDCCH). 
     
     
       10. The wireless device of  claim 1 , wherein the determining the radio link quality is based on at least one of:
 an average of a first measurement of a first reference signal and a second measurement of the second reference signal; 
 a maximum of the first measurement and the second measurement; 
 a minimum of the first measurement and the second measurement; or 
 a summation of the first measurement and the second measurement. 
 
     
     
       11. The wireless device of  claim 1 , wherein the uplink signal is at least one of:
 a random-access preamble; 
 a scheduling request (SR); or 
 a medium-access control control element (MAC CE). 
 
     
     
       12. The wireless device of  claim 1 , wherein the one or more configuration parameters further indicate a coreset index for the coreset. 
     
     
       13. A base station comprising:
 one or more processors; and 
 a memory storing instructions that, when executed by the one or more processors, cause the base station to:
 transmit, to a wireless device, one or more configuration parameters indicating a single frequency network (SFN) scheme; 
 transmit, to the wireless device, a command activating at least two transmission configuration indicator (TCI) states for a control resource set (coreset); and 
 transmit, to the wireless device via the coreset, downlink control channels based on the at least two active TCI states; and 
 determine that a radio link quality based on the at least two active TCI states of the coreset is lower than a threshold, wherein the determining is based on:
 receiving, from the wireless device, an uplink signal indicating a radio failure; and 
 the one or more configuration parameters indicating the SFN scheme. 
 
 
 
     
     
       14. The base station of  claim 13 , wherein the radio failure is a radio link failure of a cell. 
     
     
       15. The base station of  claim 13 , wherein the radio failure is a beam failure. 
     
     
       16. The base station of  claim 13 , wherein the radio link quality is a signal noise rate (SNR). 
     
     
       17. The base station of  claim 13 , wherein the radio link quality is based on:
 a first reference signal indicated by a first TCI state of the at least two TCI states; and 
 a second reference signal indicated by a second TCI state of the at least two TCI states. 
 
     
     
       18. The base station of  claim 13 , wherein the one or more configuration parameters the SFN scheme for physical downlink control channel (PDCCH). 
     
     
       19. The base station of  claim 13 , wherein the received uplink signal is at least one of:
 a random-access preamble; 
 a scheduling request (SR); or 
 a medium-access control control element (MAC CE). 
 
     
     
       20. A non-transitory computer-readable medium comprising instructions that, when executed by one or more processors, cause the one or more processors to:
 receive, from a base station, one or more configuration parameters indicating a single frequency network (SFN) scheme; 
 receive, from the base station, a command activating at least two transmission configuration indicator (TCI) states for a control resource set (coreset); 
 monitor, via the coreset, downlink control channels based on the at least two active TCI states; 
 determine, when the one or more configuration parameters indicate the SFN scheme, a radio link quality based on the at least two active TCI states of the coreset; and 
 based on the radio link quality indicating a radio failure, transmit, to the base station, an uplink signal indicating the radio failure.